极大验后估计在混合分组逐次平差中的应用

来源期刊：中南大学学报(自然科学版)1994年第3期

论文作者：覃辉 张后苏

文章页码：294 - 300

关键词：矿区扩建网; 整体混合平差; 混合分组逐次平差; 极大验后估计; 联系参数

Key words：expanded mining control network; overall mixed adjustment mixed group succe-sive adjustment; maximun aftereffect estimation; connective parameters

摘    要：针对矿山控制网扩建时的实际情况,提出了混合分组逐次平差的函数模型,证明了扩建网极大验后平差的结果等于混合整体平差的结果,推导了单位权方差的无偏估计公式及扩建,或坐标和联系参数的协因数矩阵,最后,用一实例验证了扩建网极大验后平差的全部结论公式.

Abstract: In view of the practical situation where mining control network is expanded,this paperproposes the function model of mixed group succesive adjustment,in which the results ofmaximum aftereffect adjustment to the expanded network are equal to those of overall mixedadjustment.The unbiased estimation formula of unit weight variance are derived and the co-factor matrices of connective parameters and coordinates in the expanded network are given.Finally,a practical example is given to verify all the result formulas of this adjustment.